Window frame and sash



- 2 Shets-Sheet 1.

(No Model.)

N. M. KITTELSEN & M. WALKER.

WINDOW FRAME AND SASH.

Patented May 3,

sen

18 M Ware -w,

I iohaeZ (No Model.) 2 Sheets-Sheet 2.. N. M. KITTELSEN 82; M. WALKER.

WINDOW FRAME AND SASH.

No. 603,597. Patented MayS, 1898.

d 1M ..\W a 0 UNITED STATES PATENT. OFFICE.

NILS M. KITTELSEN AND MICHEL WALKER, OF CHICAGO, ILLINOIS.

WINDOW FRAME AND SASH.

SPECIFICATION forming part of Letters Patent No. 603,597, dated May 3, 1898.

Application filed July 22, 1897- Serial No. 645,603. (No model.)

To all whom it may concern.-

Be it known that we, NILs M. KITTELSEN, a subject of the King of Sweden and Norway, and MICHEL TALKER, a citizen of the United States, residents of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Window Frames and Sashes, of which the following is a specification.

. This invention relates to improvements in window-frames and window-sashes.

Primary objects of the invention are, first, to simplify the construction of window-frames and window-sashes generally, thus cheapening the cost of manufacture thereof, and, second, to provide a window-frame and windowsashes constructed in such manner that the sashes may be quickly and conveniently disengaged from the frame and drawn or swung into the room, thus rendering the outside of the window accessible for purposes of cleaning.

A window frame and sashes embodying our invention consist of the various features,combinations of features, and details of construction hereinafter described and claimed.

In the accompanying drawings a window frame and sashes embodying our invention are fully illustrated.

Figure 1 is a front view, partly in section, of a window embodying our invention. Fig. 2 is a vertical sectional view thereof.

on the lines 3 3 and 4 4, respectively, of Fig. 1. Fig. 5 is an enlarged sectional View on the line 5 5 of Fig. 1, and Fig. 6 is a sectional view on the line 6 6 of Fig. 5.

Referring now to the drawings,A designates the window frame or casing, A the lower sash, and A the upper sash.

One feature of our invention relates to improved means for balancing the windowsashes, whereby the use of sash -balance weights is dispensed with, thus eliminating this item of expense and also enabling the construction of the window frame or casing to be materially simplified by dispensing with boxes for said sash-balance weights and correspondingly reducing the cost of manufacture. 'As it relates to this feature our invention consists in balancing the sashes against each other by means of cords a, the

Figs. 3 and at are enlarged sectional views thereof ends of which are secured adjacent to the bottoms of both sashes and which are adj usted to pulleys a, which, as shown, are revolubly supported in suitable housings or stand ards a secured to the" top of the window frame or casingA, holes a being formed in the top of said window-frame to permit the passage of said sash-cords a and longitudinal grooves a being formed in both of the sashes A A to receive said cords.

By balancing the window-sashes against each other in the manner described we dispense with the sash-balance weights and are also enabled to form the sides of the window frame or casing from plain side pieces A thus effecting a material saving in material and labor necessarily incurred in providing boxes for said sash-balance weights in window frames or casings as heretofore constructed.

With the described construction it is obvious that movement of either sash will produce a corresponding movement of the other sash, one sash moving up as the other moves down. In the preferable construction shown, however, means are provided for producing a differential movement of said sashes,whereby when the lower sash is fully raised a space will be left below the upper sash and the bottom of the window frame or casing, thus providing for-the use of a screen in said window without leaving unprotected openings. means for producing such differential movement of the sashes areas follows: Formed in the sides of the lower sash, adjacent to the bottom thereof, are recesses 19, through which extend revoluble shafts b. Rigidly secured to the shafts b are drums B, to which'one end of each sash-cord a is attached in such manner that said cords will be wound upon said drums as said drums rotate. Also secured to the shafts b are what for purposes of convenient reference maybe termed traction-Wheels B,which extend throughlateral The openings in the window-sash in position to come into contact with the window frame or casing. Series of sharp teeth 79 are formed as the sash is lowered.

or unwound from said drums 'B as the lower sash is raised'or lowered. As shown,said

cords are attached to said drums in such manner that they will be wound upon said drums as the sash is raised or unwound therefrom It is also obvious that by properly proportionin g the sizes of the drums B and disks 13 any desired relative movement of said upper and lower sashes may be obtained. A desirable proportion is such that the movement of the upper sash will be about one-quarter (1%) of the movement of the lower sash.

In order to secure the lower sash in raised position, means are provided as follows: The ends of the shafts b project outwardly beyond the window-sash and are squared,and secured to said sash are longitudinally-movable platesh in which are formed slots 6 adapted to engage the squared ends of the shafts b and prevent rotation thereof. As shown, the plates 12 are secured to the window-sash by means of screws b preferably thumb or wing screws, which pass through slots 11 formed in said plates, thus providing for necessary longitudinal movement of said plates to lock andrelease the shafts I). Said screws also provide convenient means for securing said plates in adjusted position.

As it relates to means for removably securing the sashes in operative position the construction of our improved window is as follows: Secured to the inner side of the lower sash A are stops G, which are adapted to be moved into and out of engagement with longitudinal grooves 0, formed in the faces of the sides-A of the window-frame. As shown,

transverse slots 0 are formed in the stops said stops from engagement with said grooves said sash is released from said window frame or casing and may be swung or drawn inwardly.

The parting-strips D consist of fi-xed lower sections d and upper sections at, fitted to grooves or slots d formed in'the window frame creasing and adapted-to be depressed into said grooves or slots, so that the outer edges thereof will be flush with the faces of said window frame or casin g. The upper sections'd of said parting-strips D are longer than the upper sash A so that when theyare depressed said upper sashwill be free and may be swung or drawn inwardly.

In the construction shown springs d are applied to the inner edges of the sections 01 of the parting-strips D, which are adapted to maintain said sections d normally extended or advanced, and stops are provided which operate to limit the movement of said sections d underthe influence of the springs d As shown, said'stops are formed by the ends of a strip d secured to the top of the window frame or casing, and by the lower sections d of the parting strips, shoulders 01 being formedon said upper sections at, which are adapted to come into contact with the upper ends of said lower sections d. In the preferable construction, also, means are provided 'the window frame or casing, so as to be flush therewith. The bolts or pins d are withdrawn to release said movable sections at of the parting-strips and allow them to return to their normal advanced or extended positions by means of pins 61 secured therein, which extend into slots 01 formed in the housings D, so as to be accessible.

In assemblingour improved window the movable sections 61 ofthe parting-strips are secured in retracted or depressed position by the pins or bolts d. The upper sash A is then placed in position and the bolts or pins d re- 'tracted, thus allowing said sections cl to assume their normal advanced positions. The lower sash is then placed in position and the stops 0 moved outwardly into engagement with the grooves c and secured in engagement-therewith by means of the screws 0 When for any reason it is desired to obtain access to the exterior of the window, the screws 0 are loosened and the stops 0 withdrawn from engagement with the grooves c. The lower sash is thus disengaged from the window frame or casing and may be drawn orswung inwardly, and the sash-cords being attached adjacent to the bottom of said sash admit of the top of'said sash being swung inwardly, so that said'sash will-assume a position :substantially as shown in diagram in Fig. 2. After removing the lower sash the movable sections d of the parting-strips are depressed until the pins or bolts d engage the holes or sockets d formed therein, thus securing said sections d in position to disen- IOC gage said uppersash from the window-casing.-

attached to said drums, traction-wheels secured to said drums which run in contact with the window-casing, whereby movement of said sash will impart rotation to said drums,and means to secure said drums against rotation, substantially as described.

2. The combination with movable windowsashes, of shafts revolubly mounted in said sashes, drums secured to said shafts, tractionwheels likewise secured to said shafts, which run incontact with the window-casing, sashcords, one end of each of which is secured to the upper sash and the other ends of which are attached to the drums mounted in the lower sash, the ends of said shafts projecting from said sash and being squared, and slotted, longitudinally-movable plates secured to said window-sash, in such position that movement thereof in the proper direction will cause the slots therein to engage the squared heads of said shafts and secure said shafts against rotation, substantially as described.

3. The combination with a window-frame and movable upper and lower window-sashes, of grooves formed in the sides of said windowframe, strips or stop-plates secured to the lower sash by means of clamping orbinding screws, which pass through transverse slots formed in said strips orstop-plates, said strips or stop-plates being adapted to be moved outwardly into engagement with said grooves and to be retracted out of engagement therewith, the parting-strips of said window-frame comprising upper sections, fitted to and adapted to be depressed into grooves or slots formed in the sides of said window-frame, springs applied to the rear sides of said movable sections of said parting-strips and adapted to maintain the same normally advanced or extended, and stops to limit the movement of said movable sections under the influence of said springs, substantially as described.

4. The combination with a window-frame and movable upper and lower window-sashes,

I of grooves formed in the sides of said windowframe, strips or stop-plates secured to the lower sash by means of clamping or binding screws, which pass through transverse slots formed in said strips or stop-plates, said strips or stop-plates being adapted to be moved outwardlyinto engagement with said grooves and to be retracted out of engagement therewith, the parting-strips of said window-frame comprising upper sections, fitted to and adapted to be depressed into grooves or slots formed in the sides of said window-frame, springs applied to the rear sides of said movable sections of said parting-strips and adapted to maintain the same normally advanced or extended, stops to limit the movement. of said movable sections under the influence of said springs and sash-cords attached adjacent to the bottoms of said upper and lower sashes, substia fitially as described.

5. e combination with a window-frame and movable upper and lower window-sashes, of guide-grooves formed in the sides of said window frame or casing, strips or stop-plates secured to the lower window-sash and adapted to be moved outwardly into engagement with said grooves and adapted to be withdrawn from engagement therewith,the parting-strips of said window-frame comprising upper sections fitted to and adapted to be depressed into grooves or slots formed in the sides of said window-frame, springs applied to said movable sections of said parting-strips and adapted to maintain the same normally advanced or extended, stops to limit the movement of said movable sections of said parting-strips under the influence of said springs and bolts or pins adapted to secure said movable sections of said partingstrips in depressed position, substantially as described.

6. The combination with a window frame or casing and movable upper and lower sashes, of grooves formed in the sides of said window frame or casing, strips or stop-plates secured to the lower window-sash and adapted to be moved outwardly into engagement with said grooves and to be retracted from engagement therewith, the parting-strips of said windowframe comprising upper sections fitted to and adapted to be depressed into grooves or slots formed in the sides of said window-frame, means to secure said movable sections of said parting-strips in advanced or extended position, drums revolubly mounted in the lower sash, traction-wheels secured to said drums, which run in contact with the window-casin g and impart rotary movement to said drums when said sash is raised or lowered, sashcords, the corresponding ends of each of which are attached to the drums mounted in said lower sash, and the opposite ends of which are attached to the upper sash, and pulleys supported at the top of said window-frame ICC) over which said sash-cords pass, substantially NILS M. KITTELSEN. MICHEL WALKER.

Witnesses:

FRED P. MEYERS, JOHN C. BLEY.

IIO 

